Apparatus for use in twisting metal rods or bars.



L. HKRTEL & L. KISSLING. APPARATUS FOR USE IN TWISTING METAL ROD$ 0R BARS APPLICATION FILED MAY 8, 1,908.

Patented Feb. 14,1911.

THE NaR'ms PETERS cu. WASHINGTON, n, c

tliTEE i LOUIS HARTEL AND LUDWIG KISSLING, OF REMSCHEID, GERMANY.

APPARATUS FOR USE IN TWISTING METAL RODS OR BAR-S.

To all whom it may concern:

Be it known that we, LOUIS HARTEL and LUDWIG KIssLiNo, subjects of the German Emperor, both residing at Remscheid, Germany, have invented av certain new and useful Apparatus for Use in Twisting Metal Rods or Bars, of which the following is a specification.

This invention relates to apparatus for the helical twisting of metal rods or bars.

Figure 1 shows the machine in front elevation, Fig. 2 is the left and Fig. 3 is the right hand side elevation.

The arrangement and the working of the machine are as follows :The bar a; while still incandescent as it would be for instance on emerging from a rolling mill is suitably fed into the hollow spindle Z) arranged in the head stock (1 passes over the support and protective troughs c to the head stock cl at the other end, in order that it may then be fixed by means of the chucks e f g h, whereupon the machine is started.

The twisting of the bar w or of each half of it between the chucks ef, gh is effected owing to the machine being driven by the two driving pulleys i and 7c in one and the same direction of rotation, that is in such manner that the driving pulley i is keyed direct to the driving spindle, while the driving pulley 7c is mounted on a countershaft. In that way two chucks eh are rotated in opposite directions. As the two chucks fg must rotate in opposite directions to each other and to the chuck arranged opposite them, the two central driving gears are arranged or driven alternately, that is to say the left hand gear a is driven by 70, and the right hand gear 0 by 2', whereby the directions of rotation shown in Fig. l are obtained, and thus the bar w or the halves of Specification of Letters Patent.

Application filed May 8, 1908.

Patented Feb. MC, 1911.

Serial No. 431,601.

the bar, are simultaneously and uniformly twisted at both sides between the chucks e-f, gh. In the center between the chucks fg the bar is automatically broken or twisted off owing to its being fixed along a short length and to the consequent excessive twist.

The chief advantage of the machine accordin to this invention consists in the fact that it is possible to treat in the shortest possible time two bars of any desired length, and that the bar is automatically broken or twisted off in the center.

What we claim as our invention and desire to secure by Letters Patent is In a machine of the character described the combination of a plurality of hollow spindles removed from but in line with each other and adapted to receive a rod to be twisted, rodholding chucks e, f,g,h, mounted upon said spindles, a driving pulley z keyed on one of said spindles constituting a driving spindle, a countershaft, a second driving pulley 7c keyed on said countershaft, and gearing between the driving spindle and the countershaft whereby the chuck 6 will be rotated in a direction opposite to the direction of rotation of chuck f, and the chuck g rotated in a direction opposite to the direction of rotation of chuck h, said chucks f and gbeing rotated in opposite directions to each other in the manner and for the purpose set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

LOUIS HiiRTEL. 1,. s] LUDwIe KISSLING. [n.s] 

